| 1992 |
| Agreement of Cooperation between Thammasat University, the Federation of Thai Industries and Keidanren to set up the bachelor's degree programs in engineering |
Admission of the first batch of students to bachelor's degree programs in civil, electrical and
industrial engineering |
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| 1993 |
| Her Royal Highness Princess Maha Chakri Sirindhorn graciously laid the cornerstone of the Institute's main building |
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| 1994 |
| Issuance of regulations on the formation and operation of the International Institute of Technology as a non-government and autonomous institute by Thammasat University Council |
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| 1996 |
| His Majesty the King graciously granted the name "Sirindhorn International Institute of Technology" |
| His Majesty the King graciously accepted the first Honorary Doctoral Degree in Information Technology (IT) from SIIT, which was humbly presented by Thammasat University Council |
| Graduation of the first batch of students |
Master's degree programs in science and technology were approved by
Thammasat University Council |
| 1996 The Cornerstone Laying Ceremony of an Advanced Laboratory Building was presided over by His Excellency Anand Panyarachun |
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| 1997 |
| PhD programs in engineering and science were approved by Thammasat University Council and first PhD student and first MS student were admitted |
| Her Royal Highness Princess Maha Chakri Sirindhorn graciously presided over the inauguration of the Institute's new name "Sirindhorn International Institute of Technology" |
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| 1998 |
| The Federation of Thai Industries and Keidanren jointly dedicated the Advanced Laboratory Building to SIIT on October 6, 1998. |
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| 1999 |
| Inauguration of the SIIT Advanced Laboratory Building was presided over by Mr. Paron Israsena, Former Chairman of the Federation of Thai Industries |
| The Federation of Thai Industries signed an agreement with Bangkadi Industrial Park to provide approximately 6 rai of land and a building for SIIT expansion |
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| 2000 |
| The Cornerstone Laying Ceremony of the new SIIT Building at Bangkadi, Pathumthani, was presided over by Thanpuying Niramol Suriyasat |
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| 2002 |
| Opening Ceremony of Thanpuying Niramon Suriyasat Building and IT & MT Building at Bangkadi was presided over by His Excellency Anand Panyarachun |
| Graduation of the first batch of doctoral students (3 PhD graduates) |
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| 2003 |
Her Royal Highness Princess Maha Chakri Sirindhorn graciously accepted the Honorary Doctor of Philosophy Degree in Technology from SIIT, which was humbly presented by
Thammasat University Council |
| Cornerstone Laying Ceremony of the Sirindhralai Building at Bangkadi |
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| 2004 |
| Construction of the Sirindhralai Building at Bangkadi was completed in November 2004. This new building accommodates the School of Communications, Instrumentations and Control, School of Management Technology, a computer center, a library, classrooms and laboratories. |
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| 2006 |
| Her Royal Highness Princess Maha Chakri Sirindhorn graciously presided over the inauguration of the Sirindhralai Building of SIIT at Bangkadi on June 28, 2006.
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| Graduation of the 12th batch of bachelor’s degree students. |
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| 2007 |
| Master of Engineering in Engineering Technology (International Program) and Master of Engineering in Logistics and Supply Chain Systems Engineering (International Program) were approved by Thammasat University Council. |
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| 2008 |
| Master of Engineering in Information and Communication Technology for Embedded Systems (International Program) was approved by Thammasat University Council.
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| 2010 |
| Inauguration of the SIIT Edutivity Building at Rangsit was presided over by Professor Dr. Surapon Nitikraipot, the Rector of Thammasat University, on June 29, 2010 |
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